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Oval|Lab Grown|IGI

1.57ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG739537722

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG739537722

Diamond specifications and retailer prices

From $541 NZD
$305 USD
As of October 29, 2026
Save $2,528 NZD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,070 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.57ct lab-grown oval diamond

This 1.57ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG739537722 or 739537722. Listed at 16 retailers as of October 29, 2026, with prices from $541 to $3,070, a $2,528 spread on the same certified stone. Brilliant Earth lists it at $3,070. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.57
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739537722
Dimensions9.30 × 6.62 × 4.07 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.30 mm6.62 mm1.57 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739537722
Side View
Table 62.0%Crown 33.3°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,070 NZD|Low: $520 NZD|High: $3,070 NZD|Avg: $1,318 NZD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 13$541 NZD
Retailer 6$607 NZD
Retailer 11$628 NZD
Retailer 10$672 NZD
Retailer 12$672 NZD
Retailer 8$750 NZD
Retailer 4$1,002 NZD
Retailer 5$1,095 NZD
Retailer 2$1,194 NZD
Retailer 7$1,269 NZD
Retailer 14$1,721 NZD
Retailer 3$2,064 NZD
Retailer 15$2,159 NZD
Retailer 9$2,706 NZD
Brilliant Earth$3,070 NZD

40 data points across 15 retailers

16 retailers$541 NZD to $3,070 NZD

A
Cheapest Retailer
-
$541 NZD
$305 USD
A
Retailer 2
-
$607 NZD
$342 USD
View
Final sale: no returns
A
Retailer 3
-
$628 NZD
$354 USD
View
A
Retailer 4
-
$672 NZD
$379 USD
View
A
Retailer 5
-
$672 NZD
$379 USD
View
A
Retailer 6
-
$750 NZD
£333 GBP
View
B+
Retailer 7
-
$997 NZD
$562 USD
View
B+
Retailer 8
-
$1,002 NZD
$565 USD
View
B+
Retailer 9
-
$1,095 NZD
$617 USD
View
B+
Retailer 10
-
$1,194 NZD
£530 GBP
View
B+
Retailer 11
-
$1,269 NZD
$715 USD
View
Retailer 12
-
$1,721 NZD
$970 USD
View
Price last confirmed 13 days ago
B
Retailer 13
-
$2,064 NZD
$1,163 USD
View
B
Retailer 14
-
$2,159 NZD
$1,217 USD
View
B
Retailer 15
-
$2,706 NZD
£1,201 GBP
View
Most Expensive
B
Brilliant Earth
16756886A · Oct 31
$3,070 NZD
$1,730 USD
View
15 more retailers have this diamond
Prices start from $541 NZDSave up to $2,528 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.57ct Oval
$541 NZD